package thread;

import java.util.Scanner;

/**
 * 线程提供一个静态方法
 * static void sleep(long ms)
 */
public class SleepDemo {
    public static void main(String[] args) {
        /*System.out.println("程序开始了");
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("程序结束了");*/
        System.out.println("程序开始了");
        Scanner scan=new Scanner(System.in);
        System.out.println("请输入一个数字");
        for (int num=scan.nextInt(); num>0; num--){
            System.out.println(num);
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("时间到!");
        System.out.println("程序结束了");
    }
}
